body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, /* structural elements 结构元素 */
dl, dt, dd, ul, ol, li, /* list elements 列表元素 */
pre, /* text formatting elements 文本格式元素 */
fieldset, button, input, textarea, /* form elements 表单元素 */
th, td { /* table elements 表格元素 */
    margin: 0;
    padding: 0;
}
em,var,i{
    font-style: normal;
}
strong,h1,h2,h3,h4,h5,h6,var{
    font-weight: normal;
}
a{
    text-decoration: none;
}
input,textarea,select{
    outline: 0;
    -webkit-user-select: text;
}
li{
    list-style: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}
*, *:before, *:after{
    box-sizing: border-box;
}
.clear {
    clear: both;
}
.clearfix:after {
    content: " ";
    display: block;
    clear: both;
    height: 0;
}
.clearfix {
    zoom: 1;
}
body {
    font-family: "思源黑体", "微软雅黑", "黑体", "宋体";
}